Transflective + capacitive panel?

Please forgive me if this is a dumb question, but I see a lot of posts about people wanting capacitive screens and posts about people wanting transflective screens, but I never see anything about somebody using both together. I'm curious if there's a technical reason for this as I'm in the planning stages of building a carpc and considering which route I want to go as far as my monitor is concerned. Searching has turned up very little in this regard.

Can anyone give me a reason, besides cost, why it doesn't make sense to take advantage of both technologies simultaneously? Does one negate the benefits of the other, etc? Any thoughts would be appreciated!